Okay, before I continue this conversation further I just want to note that I understand your concern for the optics of an educated doctor appearing to condescend to a large group of young people, but I think yes, he does have much more insight than the average person on tattoos, and I think it's made in jest with a little cultural misunderstanding on humor.
I have a tattoo but I acknowledge I'm not an expert. I did take a class on the psychological and social constructs behind body modifications and clothing, but most people with strong opinions on a subject believe their factual knowledge is "above average," including myself. In return, I'd like you to consider the limits of your knowledge on the topic as well.
Okay, so continuing...
>> Neither. I'm just not interested in unsubstantiated personal opinions. So the author doesn't like tattoos but decided to write an article anyway?
I'm just going to restate the first sentence of the essay here: "When I started as a prison doctor in 1990, I was both fascinated and horrified by the tattoos inscribed on the skins of the prisoners." I'd say he's more than qualified to write an op-ed on this topic. This is also not a scientific topic, so if you're looking for facts, then yes it's not the right article.
On the other hand, I think you've pointed out your chief objection clearly: People should not write about topics they don't have nice things to say about. I think this is the implicit position people take, and I appreciate you being explicit about it. As a matter of principle, I don't just disagree, but disagree very strongly with this statement.
>> That's not a novel observation for me. What's subtle or funny about it?
Ask anyone with tattoos, and while everyone "knows" that tattoos fade, it's much different when it's your tattoo. Tattoos are consistently listed at the top of the list of regrets young people make, that's a fact. I don't think it's obvious to a lot of them how it's going to look later, even really nice, expensive pieces. And that's what he's noting there. It's not just aging, it's fading and bleeding of colors. Ink on skin does not age the same way as on other media, and I seriously doubt anyone without a piece or working with clients can actually can predict what the tattoo will look like ten to twenty years later.